still to come, the new button you could soon like on your facebook page. the bay area entertainer honored by president obama. and call it the butterfly effect. why some are calling for a ban on butterflies in the city of san francisco. and later the not so incredible, edible egg. the high-tech chef looking to replace the egg with plants. santana was one of the artists to receive kennedy center honors. santana is one of a few latinos to receive the top arts award. he started playing the guitar after hearing blues and rock and roll on the radio. his album "super natural" won nine grammies. the honorees are billy joel and actress shirley mcclain. >>> south africans packed houses of worship to celebrate the life of nelson mandela. today's national day of prayer kicked off a series of memorials leading up to mandela's burial. president obama and first lady michelle obama will leave for africa tomorrow. they will join former president jimmy carter, bill clinton and george w. bush at a national memorial service on tuesday. >>> back here in the bay area, people be